Home / 28,336.96-39,103.04-15,760.32

Finding the Fourth Proportional to 28,336.96, 39,103.04 and 15,760.32

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Solution

The fourth proportional to 28,336.96, 39,103.04 and 15,760.32 is: 21,748.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,336.96 : 39,103.04 = 15,760.32 : x
  2. Step 2: Convert to fraction form
    28,336.96/39,103.04 = 15,760.32/x
  3. Step 3: Cross multiply
    28,336.96x = 39,103.04 × 15,760.32
  4. Step 4: Simplify right side
    28,336.96x = 616,276,423.37
  5. Step 5: Solve for x
    x = 616,276,423.37/28,336.96
  6. Step 6: Final answer
    x = 21,748.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.